跨上

跨上	kuà shàng	to mount (a horse, bike, flight of stairs, rickshaw etc)
跨	kuà	to step across / to stride over / to straddle / to span
上	shǎng	used in 上声
上	shàng	(bound form) up; upper; above; previous / first (of multiple parts) / to climb; to get onto; to go up / to attend (class or university) / (directional complement) up / (noun suffix) on; above